Maleic acid

CAS Registry Number®

110-16-7
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CAS Name

Maleic acid

Molecular Formula

C4H4O4

Molecular Mass

116.07

Cite this Page

Maleic acid.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/ChemicalDetail.aspx?ref=110-16-7 (retrieved 2024-03-29) (CAS RN: 110-16-7).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    138 °C
  • Melting Point (2)

    131 °C
  • Density (3)

    1.590 g/cm³ @ Temp: 20 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1-

InChIKey

InChIKey=VZCYOOQTPOCHFL-UPHRSURJSA-N

SMILES

C(=C\C(O)=O)\C(O)=O

Canonical SMILES

O=C(O)C=CC(=O)O

Other Names for this Substance

  • 2-Butenedioic acid (2Z)-
  • Maleic acid
  • 2-Butenedioic acid (Z)-
  • (2Z)-2-Butenedioic acid
  • cis-Butenedioic acid

Deleted or Replaced CAS Registry Numbers

1975169-66-4

CAS INSIGHTSTM
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